what powertap hub is this?
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what powertap hub is this?
You would think this is an easy one.
Williams 58 clincher 2010 model.
Sl+ hub cap. But not Sl+ hub shell
Williams 58 clincher 2010 model.
Sl+ hub cap. But not Sl+ hub shell
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I'd like to say its and ELITE for starters can you also get a photo with the cap removed?
It may have the serial number sticker still
It may have the serial number sticker still
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Last edited by JTGraphics; 06-04-11 at 08:44 PM.
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Looks like an older Elite with the ANT+ upgrade installed.
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What would that hub be worth attached to a Williams 58 Carbon Clincher?
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Not sure, but you could look at the pricing of the Williams wheels, figure in the $99 for the ANT+ upgrade, and go from there. I would also just make sure it actually works, since I was under the impression that you could only upgrade the old SLs--hence the cap saying SL+.
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Is the hub and Williams 58 clincher worth $950?
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Ok here you go with some info you have and Elite+ or Pro+
You can tell now by the axle the Pro+ is Aluminum and the Elite+ is steel at some point the axle also when to 15 mm also so if its smaller its also an older hub,
Price depends on which it is but $950 is a little high I think is that for a head and all?
You can tell now by the axle the Pro+ is Aluminum and the Elite+ is steel at some point the axle also when to 15 mm also so if its smaller its also an older hub,
Price depends on which it is but $950 is a little high I think is that for a head and all?
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Pro+ or Elite+. Both use that hub shell. The axle diameter and material would be the difference. If it's the Elite then the non-drive side would have take an allen wrench in the end where the skewer is and there would be a wrench flat for a cone wrench on the DS outboard of the freehub body - funny how that isn't shown in the pictures. If it's a Pro+ then there would be no wrench flat on the outboud side of the freehub body. You just pull it off.
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Hay Rob hope business is booming! just want to say the PT I had build has been great and holding up well Thanks!
OP have Rob quote you a price on a new one price is about the same as the one you are looking at and you will have warranty, because if you buy used and needs service it will cost you I think its like $380 it have it fixed they have a flat rate and go thru the hole hub.
OP have Rob quote you a price on a new one price is about the same as the one you are looking at and you will have warranty, because if you buy used and needs service it will cost you I think its like $380 it have it fixed they have a flat rate and go thru the hole hub.
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Updated with more pics
Got some more pics from seller
Got some more pics from seller
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Pro+
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I didn't want to start a whole new thread, but can someone tell me what power it is that powertaps measure?
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
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I didn't want to start a whole new thread, but can someone tell me what power it is that powertaps measure?
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
Torque x angular velocity = power (Lordy, I remembered something from freshman physics!!!!!)
Yes, it does fail to account for power losses in the chainrings, chain, and cassette.
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I didn't want to start a whole new thread, but can someone tell me what power it is that powertaps measure?
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
The way I'm imagining it is: (instantaneous force on cranks)*(sine of force angle)/(instantaneous time)
But the sensors aren't attached at the cranks, so are they measuring this same power, albeit indirectly? And if they are, it seems like a lot of assumptions would have to be made in order to calculate something close to the correct value... if someone knows how they work, I am interested.
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Another option if you want to save some cash is to search for a wired SRM setup. Those are hovering around $1K on ebay and slowtwitch.
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